Sweet potatoe (Ipomoea batatas) is a member of Convolvulaceae family originated from South Africa. As China is the largest sweet potato producer (accounting for 80% of the world sweet potato production), the yield of sweet potato leaves annually is huge. In the present study, the nutritional composition of sweet potato leaf was evaluated, methods for extracting soluble protein from sweet potato leaves and the functional properties of the extracted protein were investigated, and a mutton sausage i...